A letter to the editor is presented which discusses the differences in the melanomagenesis among LSL-V600EBraf::K14-Kitl and V600EBraf transgenic mice.Rae, JoelViros, AmayaHayward, RobertBennett, Dorothy CDhomen, NathalieLongley, B JackReis-Filho, Jorge SMarais, RichardJournal of Investigative Dermatology